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The mikroE TILT-n-SHAKE click is a multifunctional add-on board that is designed to keep away people from tampering with your design. Featuring a combination of tilt AND shake functionalities, the TILT-n-SHAKE click includes a MMA8491Q IC sensor that is used as a 3-axis, 45-degree tilt sensor and can also be configured as a 3-axis digital accelerometer. The user is required to keep the Enable pin (EN) pulled to logic level high to use it as an accelerometer.

Featuring a 14-bit digital output and ??8g full-scale range, this MEMS chip has a 1 mg/LSB sensitivity, and a fast response time of around 700 microseconds. TILT-n-SHAKE click communicates with the target board MCU through mikroBUS I2C interface, using SCL, SDA pins. As a tilt sensor, the MMA8491Q chip has three detection outputs, one for each axis: Xout, Yout and Zout. For specific applications you may need only one or two dimensions, not all three.

This click board is intended to use a 3.3V power supply. It is ideal for tamper detect and anti-theft detection systems.

IC Module: MMA8491Q IC

The 3-axis multifunction digital accelerometer comes in a small package. It can be used in two accelerometer configurations, either as a 45° tilt sensor or as a digital output accelerometer with I2C interface. Ideal for tamper detect, anti-theft and remote control devices, the TILT-n-SHAKE click device can operate in a wide voltage range with fast data output time (~700 μs).

As a 45-degree Tilt Sensor

The MMA8491Q device is extremely easy to implement by using a single line output per axis. Once it reaches the 45° tilt angle, depending on the direction it leans to, this click board outputs either a Xout, Zout or Yout signal—all through the same interrupt pin. Three onboard LEDs will also signal the tilt orientation.

As Digital Output Accelerometer

The TILT-n-SHAKE click can be used as a 3-axis digital accelerometer that offers a 14-bit digital output with a ±8g full-scale range, which can be read from the device with a 1 mg/LSB sensitivity.